You’ll be able to login to the web site with a Windows Live ID to purchase apps using the credit card linked to your account. You can then send download links to your phone via SMS or email to initiate a download. It’s not quite as elegant as Google’s web-based Android Market which lets you start a download on your phone simply by clicking a button on the web. But it’s pretty close, and unlike iTunes, you don’t need to download an app to your desktop and synchronize your phone to install an app you discovered using a web browser.